Bird-lime is a viscous substance used for entangling birds so as to make them easily caught, twigs being for this purpose smeared with it at places where birds resort. It is prepared from holly-bark, being extracted by boiling; also - mainly in Italy - from the viscid berries of the mistletoe.
Bird-lime was traditionally prepared from holly-bark which was boiled for between ten and twelve hours, where upon the green bark becoming seperated from the rest, it was covered over and left in a moist place for two weeks and then pounded into a rough paste so that no woody fibres were discernable, and then washed in ruunning water. After washing the holly-bark bird-line was left to ferment for four or five days, being regularly skimmed to remove any surface waste, and was then ready for use. Before use, two parts of holly-bark birdlime were mixed with one part nut-oil or grease, and mixed together while being warmed over a fire. Research Bird-Lime